TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) Insider Trading
Sector: Semiconductors · Market Cap: $62.5T · 0 insider purchases in the last 7 days
No open market insider purchases at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD in the last 7 days.
What this trade tells us
AI-generated analysis of disclosed insider activity. Updated May 20, 2026. Not investment advice.
- Over the last 90 days, TSM insiders executed 62 purchases totaling approximately $1.0M with zero sales, indicating exclusively bullish sentiment across the insider population with no offsetting dispositions.
- A cluster buy pattern is present, with three or more distinct insiders purchasing shares across multiple dates in late March and early April, suggesting coordinated or independently aligned conviction rather than isolated individual transactions.
- Executive-level purchases include the CEO (Wei Che-Chia) and two COOs (Mii Yuh-Jier and Chin Yung-Pei) buying modest quantities on the same dates in April and May, indicating alignment among top management on valuation at those price levels.
- The most-active historical insider, Tien Bor-Zen (VP), accounts for two of the largest trades in the window, including a $70K purchase on May 19, 2026, demonstrating sustained engagement by a repeat buyer.
- Director Ursula M. Burns executed a notably large single purchase of $322K on March 31, representing the single largest transaction and suggesting board-level confidence, though this stands apart from the smaller, repeated pattern of executive buying.
- The presence of 25 congressional trades on TSM over the past 12 months indicates notable legislative interest in the stock across both parties, though this represents activity separate from company insiders and does not directly reflect management conviction.
Bottom line:Sustained, multi-level insider buying with no sales activity presents a moderate bullish signal, though the modest aggregate dollar value and small individual position sizes limit the intensity of conviction implied.
Want more?
Sign up free to see 30+ days of history, set alerts, and track TSM on your watchlist.
Start for FreeAbout TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Insider Trading
31 insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) have purchased stock in the past 90 days, totaling $1.2M across 110 transactions (16,246 shares).
The most recent purchase was by VP Ku Yao-Ching on September 7, 2026 — a $4K buy of 47 shares at $76.20, bringing his total holdings to 188 shares.
Insiders who purchased: Tien Bor-Zen (VP, 14 buys totaling $388K); Lin Shyue-Shyh (VP, 6 buys totaling $229K); Yuan Lipen (VP, 6 buys totaling $183K); Fang Shu-Hua (VP, 4 buys totaling $90K); Wei Che-Chia (CEO, 3 buys totaling $34K); Chin Yung-Pei (COO, 3 buys totaling $16K); Mii Yuh-Jier (COO, 3 buys totaling $16K); Zhang Kevin Xiaoqiang (COO, 3 buys totaling $14K); Hou Yung-Chin (COO, 3 buys totaling $14K); Wu Shien-Yang (VP, 3 buys totaling $13K); Cao Min (VP, 3 buys totaling $12K); Yeap Choh Fei (VP, 3 buys totaling $12K); Wang Ying-Lang (VP, 3 buys totaling $12K); Hsu Kuo-Chin (VP, 3 buys totaling $12K); Chang Tzonz-Sheng (VP, 3 buys totaling $12K); Lee Chun-Hsien (VP, 3 buys totaling $12K); Yoo Chue-San (VP, 3 buys totaling $12K); Lu Lee-Chung (VP, 3 buys totaling $11K); Chuang Juiping (VP, 3 buys totaling $11K); Jang Syun-Ming (VP, 3 buys totaling $11K); Chen Chih-Ho (Controller, 4 buys totaling $11K); Lin Chris Horng-Dar (VP, 3 buys totaling $11K); Ku Yao-Ching (VP, 3 buys totaling $11K); Chuang Tzu-Sou (VP, 3 buys totaling $10K); He Jun (VP, 3 buys totaling $10K); Chen Pei-Hung (VP, 3 buys totaling $10K); Hwang Yuan-Ko (VP, 3 buys totaling $9K); Wu Yi-Huang (VP, 3 buys totaling $9K); Lu Chin-Sheng (VP, 3 buys totaling $9K); Huang Jen-Chau (CFO, 3 buys totaling $7K); Liaw Yung-Haw (VP, 1 buy totaling $4K).
This level of insider buying appears elevated compared to TSM's typical activity — there were 102 purchases in the prior nine months.
TSM is in the Semiconductors sector within the Semiconductors industry with a market cap of $62.5T.
With 31 different insiders buying in the same 90-day window, this qualifies as cluster buying at TSM — a pattern that research suggests can signal conviction among management.
Track TSM insider trading activity, set up email alerts, and get AI-powered trade analysis with a free Insider Trading Tracker account.
Members of Congress Trading TSM
Politicians who have disclosed trades in TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) in the last 12 months.
| POLITICIAN | PARTY | TRADES | LAST TRADE |
|---|---|---|---|
| Gilbert Cisneros | D | 5 | Feb 26, 2026 |
| Cleo Fields | D | 4 | Jul 10, 2026 |
| Lisa Mcclain | R | 4 | Oct 31, 2025 |
| Michael T. McCaul | R | 2 | May 18, 2026 |
| Richard W. Allen | R | 2 | May 8, 2026 |
| Julia Letlow | R | 1 | Feb 2, 2026 |
| Valerie Hoyle | D | 1 | Sep 23, 2025 |
| Jared Moskowitz | D | 1 | Oct 10, 2025 |